Hi Northy, indeed the Sky Wing range starts at 95L, this is for people who have already a bit of wingfoiling experience/lighter riders etc. The Sky SUP is also a great option, best sellers are 6'7" and 6'11" - given you have the wind foiling experience and lots of WS skills, I would say go for either the 6'7" or 6'3" to learn on and progress - afterwards once you have the gybes and tacks down, go for the Sky Wing 5'4"....I´m 78kg´s and spent a lot of time on the 6'3" myself, after learning on the 6'11" and older range, a bit of volume is always really helpful at first.
Echo 6.0 is great, as it will work from below 10knots up to 20knots easily, Wings are like kites in that they have a pretty huge wind range, depending on the angle you hold them at...